Free HCIA-Transmission V2.5 Exam H31-311_V2.5 Exam Practice Test

Which of the following communication protocols are used for DCN management of Huawei devices? (Multiple choice).

• HWECC
• TCP/IP
• FTP
• OSl

The segment overhead of STM-4 is () bytes/frame.

• 9*9*4
• 9*8'4
• 9*9*8
• 9*8

In WDM systems, it is ideal to use a dielectric thin film filter (TFF) when using less than () wavelengths.

• 4
• 8
• 16
• 20

Bait-doped fiber amplifiers (EDFAs) are a key component of the new generation of optical communication systems. Which of the following is the feature of EDFA? Multiple Choice)

• High gain
• High output meritorious service
• Amplification of any wavelength
• Low noise index

The Raman amplifer uses which of the following effects?

• Self-phase modulation (SPM).
• Dispersion
• Raman scattering
• Four-wave mixing (FWM).

OSN1500/2500/3500/7500 supports DC and AC power inputs.

• True
• False

Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?

• Wavelength conversion techniques
• Optical release technology
• Multiplexing/multiplexing technique
• Optical supervision technology

Which of the following statements about the MST functional module is correct? (Multiple choice).

• MST is both the source and sink of MS. .
• MST implements BIP-8 statistical computation of B2 bytes.
• MST returns bit error messages, but does not return a specific number of bit errors
• MST provides an E20 orderwire channel. .

Which of the following statements about the advantages of OTN are incorrect?

• WDM function is used to meet the requirements of the bait fiber Tbit/s bandwidth.
• OTN provides the final five levels of nested or overlapping TCM connection monitoring.
• OTN provides powerful out-of-band FEC functionality to effectively ensure line transmission performance.
• 0TN provides 2.7 Gbi/s, 10.7Gbt/s, 43Gbt/s and even 111.8 Gbit/s high-speed interfaces.

The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots

• Unidirectional path protection ring
• SNCP ring
• Bidirectional MSP ring
• All of the above